Created
February 18, 2014 13:16
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JS Truthy Falsey
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| ### JavaScript Truthy Falsey | |
| ---------- | |
| #### JavaScript treats all these values as Truthy: | |
| * true | |
| * 1 (because it’ s a non-zero number) | |
| * "0" (because it’ s a non-empty string) | |
| * "false" (because it’ s a non-empty string) | |
| * function() {} (any function) | |
| * {} (any object) | |
| * [] (any array) | |
| #### And these values are Falsey: | |
| * false | |
| * 0 (the number zero) | |
| * "" (an empty string) | |
| * null | |
| * undefined | |
| * NaN (a special number value meaning Not a Number) | |
| ---------- | |
| > Written with [StackEdit](https://stackedit.io/). |
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